Welcome to OSA - Masonry Heater- (German "Grundofen") and Tiled Stoves

OSA is a company developing and producing Masonry Heater- and Tiled Stove Systems in Germany - here well known as the so called "Grundofen". For the various room- and house sizes we have developed different stove concepts that let you enjoy the natural heat. Concepting these stoves has a long tradition within our familiy and thus you can take advantage of our long lasting experience combined with latest technology.